2010 Cadillac CTS Sedan AWD V6-3.6L Page 978
2. Operate the vehicle within the Conditions for Running the DTC, to verify the DTC does not reset. You may also operate the vehicle within
the conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
Note: You must perform the Circuit/System Verification first.
1. Disconnect the skip shift solenoid harness connector.
2. Ignition ON, verify that a test lamp illuminates between the voltage circuit terminal B and ground.
瀚慖f the test lamp does not illuminate, test the voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal and
the circuit fuse is open, replace the skip shift solenoid.
3. Verify that a test lamp does not illuminate between the voltage circuit terminal B and the control circuit terminal A.
瀚慖f the test lamp illuminates, test the control circuit for a short to ground. If the circuit tests normal, replace the ECM.
4. Remove the test lamp.
5. Command the skip shift solenoid ON with a scan tool. Verify with a scan tool that the skip shift solenoid Ckt. Short Volts Test Status
parameter is OK.
瀚慖f not the specified value, test the control circuit for a short to voltage. If the circuit tests normal, replace the ECM.
6. Install a 3A fused jumper wire between the skip shift control circuit terminal A and the voltage circuit terminal B. Command the skip shift
solenoid ON with a scan tool. Verify with a scan tool that the affected skip shift solenoid Ckt. Short Volts Test Status parameter is displaying
Fault.
瀚慖f not the specified value, test the control circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
7. If all the circuits test normal, replace the skip shift assembly.
Repair Instructions
* Gear Select/Skip Shift Solenoid Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids -
Transmission and Drivetrain/Actuators and Solenoids - M/T/Shift Solenoid/Service and Repair/Gear Select/Skip Shift Solenoid Replacement
)
* Engine Control Module Programming and Setup (w/LF1) (See: Powertrain Management/Computers and Control Systems/Engine Control
Module/Testing and Inspection)Engine Control Module Programming and Setup (w/LLT) (See: Powertrain Management/Computers and
Control Systems/Engine Control Module/Testing and Inspection)Engine Control Module Programming and Setup (V8) (See: Powertrain
Management/Computers and Control Systems/Engine Control Module/Testing and Inspection)
* Engine Control Module Replacement (See: Powertrain Management/Computers and Control Systems/Engine Control Module/Service and
Repair)
Repair Verification
1. Install any components or connectors that have been removed or replaced during diagnosis.
2. Perform any adjustment, programming, or setup procedures that are required when a component or module is removed or replaced.
3. Clear the DTCs.
4. Turn OFF the ignition for 60 seconds.
5. Engine running, command skip shift solenoid ON and OFF with a scan tool, while observing the skip shift circuit status parameters. The
circuit status parameters should change from OK to Not Run or Not Run to OK.
瀚慖f another DTC is present, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) and perform the appropriate diagnostic procedure.
P080D
DTC P080C or P080D
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System
Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an
overview of the diagnostic approach.
* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure
Instructions)provides an overview of each diagnostic category.
